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Summary
| Description |
English: Machine for generating key lists for the SIGABA/ECM II cipher machine used by the United States during World War II and after. It used a rotor device, possibly stored in safe at lower right, to produce random SIGABA settings for each day. The unit on the left is an IBM 513 Reproducing Punch. Connections to the other machines are made via the 513's plugboard. (Compare with http://www.columbia.edu/cu/computinghistory/513.jpg) |
| Date | |
| Source | https://www.nsa.gov/Portals/70/documents/about/cryptologic-heritage/historical-figures-publications/publications/technology/The_SIGABA_ECM_Cipher_Machine_A_Beautiful_Idea3.pdf?ver=2019-08-07-124409-850 The SIGABA/ECM II Cipher Machine: “A Beautiful Idea,” Center for Cryptologic History, National Security Agency |
| Author | Employee of U.S. government |
Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:03, 6 January 2020 | | 1,087 × 764 (669 KB) | ArnoldReinhold | User created page with UploadWizard |
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